It all happened in night. It was around 1:03 or something. Nothing seemed weird at first. It was just my sleeping pattern.
I sat in my bed, listening to music and revising for an exam next week.
Then that question came. That always troubled me. I didn't had the notes, so I picked my phone to search it up.
By the way, my phone has face unlock. It only unlocks if the ambient light is bright enough.
Regardless of that (because it was usual) I searched for the answer, noted it in my notebook and locked the phone.
Then, around 20 seconds later, the screen lit. It was still natural, because it lit if it felt any difference in light.
So I leaned over it to switch it off. But before I get to the phone, it had already unlocked.
It had detected my face on the ceiling.
Since then, I have been wondering what did the phone caught on the ceiling.
My dad told me my Grandma used to look just me. She passed away long before I was born. I never saw her but my phone probably did.